Muscles Of The Shoulder And Upper Arm (Origins And Insertions)

Question 1

Name the muscles connecting the upper limb to the vertebral column

Answer 1

-Trapezius
-Latissimus Dorsi
-Levator Scapulae
-Rhomboideus Minor
-Rhomboideus Major

Question 2

Name the origin and insertion of the trapezius

Answer 2

Upper O- Medial 1/3 of superior nuchal line, inion (EOP), ligamentum nuchae, and SP of C7
Upper I- Lateral third of clavicle, acromion process
Middle O- SPs C7-T5
Middle I- Acromion and scapular spine
Lower O- SPs T6-T12
Lower I- Scapular spine

Question 3

Name the origin and insertion of the latissimus dorsi

Answer 3

O- SP of T7-S5 via thoracolumbar fascia, posterior iliac crest, ribs 10-12, and inferior angle of the scapula
I- Floor of bicipital groove of humerus and medial lip of intertubercular sulcus

Question 4

Name the origin and insertion of the levator scapulae

Answer 4

O- Posterior tubercles of TVP’s C1-C4
I- Vertebral border of the scapula superior to spine (includes superior angle)

Question 5

Name the origin and insertion of the rhomboideus minor

Answer 5

O- SP of C7-T1
I- Vertebral border of scapula including the root and above

Question 5

Name the origin and insertion of the rhomboideus major

Answer 5

O- SP of T2-T5
I- Vertebral border of scapula below the spine

Question 6

Name the muscles connecting the scapula to the humerus

Answer 6

-Deltoid
-Teres Major
-Supraspinatus
-Infraspinatus
-Teres Minor
-Subscapularis

Question 7

Name the origin and insertion of the deltoid

Answer 7

Anterior O- Lateral 1/3 clavicle,
Middle O- Acromion process
Posterior O- Spine of scapula (inferior border)
I- Deltoid tuberosity of humerus

Question 8

Name the origin and insertion of the teres major

Answer 8

O- Lower 1/3 of lateral border of scapula and across inferior angle to medial border (excluding tip)
I- Medial lip of intertubercular sulcus of humerus (crest of lesser tubercle of humerus)

Question 9

Name the origin and insertion of the supraspinatus

Answer 9

O- Supraspinous fossa
I- Superior facet on greater tubercle of humerus and joint capsule

Question 10

Name the origin and insertion of the infraspinatus

Answer 10

O- Infraspinous fossa
I- Middle facet on greater tubercle of humerus and joint capsule

Question 11

Name the origin and insertion of the teres minor

Answer 11

O- Lateral border of scapula (posterior surface, superior 2/3)
I- Inferior facet of greater tubercle of humerus and joint capsule

Question 12

Name the origin and insertion of the subscapularis

Answer 12

O- Subscapular fossa
I- Lesser tubercle of humerus and joint capsule

Question 13

Name the muscles connecting the upper limb to the thoracic wall

Answer 13

-Pectoralis Major
-Pectoralis Minor
-Serratus Anterior
-Subclavius

Question 14

Name the origin and insertion of the pectoralis major

Answer 14

Clavicular head O- Anterior surface of medial half of clavicle
Sternocostal head O- Anterior surface of sternum and upper 6 costal cartilages
Abdominal head O- Aponeurosis of external obliques
I- Lateral lip of intertubercular sulcus and crest of greater tubercle of humerus

Question 15

Name the origin and insertion of the pectoralis minor

Answer 15

O- Ribs 3-5
I- Coracoid process of scapula (medial surface)

Question 16

Name the origin and insertion of the serratus anterior

Answer 16

O- Ribs 1-8 or 9
I- Anterior surface of medial border of scapula and inferior angle

Question 17

Name the origin and insertion of the subclavius

Answer 17

O- 1st rib and its costal cartilage
I- Inferior surface of clavicle (subclavian groove)

Question 18

Name the muscles of the anterior compartment of the arm

Answer 18

-Coracobrachialis
-Biceps Brachii
-Brachialis

Question 19

Name the origin and insertion of the coracobrachialis

Answer 19

O- Coracoid process of scapula
I- Middle of medial shaft of humerus

Question 20

Name the origin and insertion of the biceps brachii

Answer 20

Short head O- Coracoid process of scapula (tip)
Long head O- Supraglenoid tubercle of scapula
I- Radial/bicipital tuberosity and bicipital aponeurosis

Question 21

Name the origin and insertion of the brachialis

Answer 21

O- Distal 1/2 of anterior surface of humerus
I- Coronoid process and ulnar tuberosity

Question 22

Name the muscles of the posterior compartment of the arm

Answer 22

-Triceps Brachii
-Anconeus

Question 23

Name the origin and insertion of the triceps brachii

Answer 23

Long head O- Infraglenoid tubercle of scapula
Lateral head O- Lateral and posterior surface of humerus, superior to radial groove
Medial head O- Posterior surface of humerus inferior to radial groove
I- Olecranon process of ulna

Question 24

Name the origin and insertion of the anconeus

Answer 24

O- Lateral epicondyle of humerus (posterior surface)
I- Olecranon process and proximal shaft of ulna (posterior)